CN105464616A - Well-washing environment-friendly double-cup packer - Google Patents
Well-washing environment-friendly double-cup packer Download PDFInfo
- Publication number
- CN105464616A CN105464616A CN201610004259.2A CN201610004259A CN105464616A CN 105464616 A CN105464616 A CN 105464616A CN 201610004259 A CN201610004259 A CN 201610004259A CN 105464616 A CN105464616 A CN 105464616A
- Authority
- CN
- China
- Prior art keywords
- wall
- well
- sliding sleeve
- central tube
- annular boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005406 washing Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000011010 flushing procedure Methods 0.000 claims description 33
- 239000010985 leather Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 19
- 239000012530 fluid Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a well-washing environment-friendly double-cup packer. The well-washing environment-friendly double-cup packer comprises an upper connector and a lower connector, wherein a center pipe is arranged between the upper connector and the lower connector in a threaded connection mode, an annular boss is fixed into the upper portion of the center pipe, a valve is seated on the annular boss, a well washing water hole is formed in the wall, above the annular boss, of the center pipe, a stop ball pin is fixed to the wall, above the well washing water hole, of the center pipe in the transverse direction, a drain hole is formed in the wall, below the annular boss, of the center pipe, the outer wall of the middle of the center pipe is sleeved with a sliding sleeve, the upper end of the sliding sleeve stretches to the outer wall, corresponding to the annular boss, of the center pipe, a shear pin ring used for limiting the siding sleeve is arranged below the sliding sleeve, the shear pin ring is fixed to the outer wall of the center pipe, the outer wall of the sliding sleeve is sleeved with a set of rubber sleeves, the rubber sleeves are arranged at intervals, and the lower portions of the rubber sleeves are fixed to the outer wall of the sliding sleeve through lock nuts. The packer causes no pollution to a stratum in the well washing process and can discharge flow during operation and truly reflect changes of oil layer production capacity during production.
Description
Technical field:
The present invention relates to oil extraction in oil field technical field, refer in particular to a kind of washing well environment-friendly type double leather cup packer.
Background technology:
In field produces field, separate zone stimulation, seperated layer water injection, oil production by layer, well-flushing are conventional technical measures, and in these several operation process, packer is the important tool of laminated distributor under well oil recovery, seperated layer water injection, separate zone stimulation.It directly affects cost of production, success rate, the job scheduling of operation, and especially job success ratio is of greatest concern.According to desired depth G.I.H after it being connected with oil pipe during use.The liquid level of the double leather cup packer oil jacket annular space of current use does not fluctuate, and the liquid level under the liquid level of oil jacket annular space and pump in oil pipe does not have interlock, can not change along with the change of productive capacity of reservoir, makes to measure liquid level inaccurate.In addition in operation process, the liquid in oil jacket annular space cannot can be discharged to ground pollution environment by earial drainage.Also have flushing fluid in washing well process can flow into well internal contamination stratum.
Summary of the invention:
In order to solve the technical problem existed in background technology, the object of this invention is to provide a kind of washing well environment-friendly type double leather cup packer.When not polluting stratum, operation during this packer well-washing can earial drainage, truly can detect liquid level when producing and react the change of productive capacity of reservoir.
The object of the invention is to realize as follows: washing well environment-friendly type double leather cup packer comprises top connection and lower contact, be threaded between top connection and lower contact central tube, described central tube top internal fixtion has annular boss, annular boss is sat and has valve, center tube wall above annular boss has well-flushing water hole, center tube wall above well-flushing water hole is transversely fixed with pin of blocking, center tube wall below annular boss has discharge orifice, in the middle part of central tube, outer wall cover has sliding sleeve, sliding sleeve upper end extends to central tube outer wall corresponding to annular boss, the shear pin ring spacing to it is provided with below sliding sleeve, shear pin ring is fixed on central tube outer wall, sliding sleeve outer wall cover has one group of gum cover, one group of gum cover interval is arranged, gum cover bottom is fixed on sliding sleeve outer wall by locking nut.
The well-flushing water hole place that central tube outer wall in such scheme is corresponding is provided with screen pack.Shear pin ring is fixed on central tube outer wall by shear pin.
The invention has the beneficial effects as follows: this packer is provided with well-flushing water hole and valve, during well-flushing, valve closes oil pipe inner chamber, and well-flushing water is entered by well-flushing water hole and do not pollute stratum by valve returns; Packer is provided with oil leak hole and sliding sleeve, and during operation, sliding sleeve is descending, and oil leak hole is exposed, and has liquid can earial drainage in sleeve pipe.Can the change of actual response productive capacity of reservoir when this packer is produced.Flushing valve and double leather cup packer merge into a single whole and simplify technological process by the application in addition, have saved expense.The well-flushing water hand-hole having wax removal heat to wash again is communicated with well-flushing valve, can detect the producing fluid level of oil jacket ring cavity at well head accurately.In addition discharge orifice and double leather cup packer are merged into a single whole, both played well-flushing not polluted reservoir, construction operation time liquid do not pollute the effect of ground environment yet.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of oil pumping state of the present invention
Fig. 3 is the structural representation of well-flushing state of the present invention;
Fig. 4 is the structural representation of bleed state of the present invention.
In figure: 1-top connection; 2-screen pack; 3-valve; 4-sliding sleeve; 6-gum cover; 7-locking nut; 8-shear pin ring; 9-central tube; 10-lower contact; 11-shear pin; 12-discharge orifice; 13-well-flushing water hole; 14-blocks pin; 15-annular boss.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in the figure, the washing well environment-friendly type double leather cup packer of the application comprises top connection 1 and lower contact 10, be threaded between top connection 1 and lower contact 10 central tube 9, described central tube 9 top internal fixtion has annular boss 15, annular boss 15 plays the effect of valve seat, annular boss 15 is sat and has valve 3, when well-flushing, valve 3 can close oil pipe internal channel, prevent flushing fluid from flowing into stratum, central tube 9 wall above annular boss 15 has well-flushing water hole 13, when well-flushing, flushing fluid enters oil pipe by oil jacket annular space through well-flushing water hole 13 and upwards discharges, central tube 9 wall above well-flushing water hole 13 is transversely fixed with pin 14 of blocking, pin 14 of blocking is used for carrying out spacing to valve 3, central tube 9 wall below annular boss 15 has discharge orifice 12, excess oil when operation in sleeve pipe is entered in pit shaft the object reaching earial drainage by discharge orifice 12, in the middle part of central tube 9, outer wall cover has sliding sleeve 4, sliding sleeve 4 can slide relative to central tube 9, sliding sleeve 4 upper end extends to central tube 9 outer wall of annular boss 15 correspondence, during oil pumping, discharge orifice 12 is closed by sliding sleeve 4, the shear pin ring 8 spacing to it is provided with below sliding sleeve 4, the anti-anti-skid sheath 4 of shear pin ring 8 moves down, shear pin ring 8 is fixed on central tube 9 outer wall, sliding sleeve 4 outer wall cover has one group of gum cover 6, gum cover 6 top external diameter is greater than the internal diameter of sleeve pipe, gum cover 6 and sleeve pipe achieve interference fit, oil jacket space-closed is reached the object of not polluted reservoir when paraffin removal from oil well heat is washed by gum cover 6, one group of gum cover 6 interval is arranged, it is outer with on wall that gum cover 6 bottom is fixed on sliding sleeve 4 by locking nut 7, gum cover 6 bottom is inserted in the wedged hole of locking nut 7, locking nut 7 is threaded with sliding sleeve 4 and is fixed by gum cover 6.Described shear pin ring 8 is fixed on central tube 9 outer wall by shear pin 11.
In order to prevent the foreign material in flushing fluid from entering in well, prevent the generation of holddown, well-flushing water hole 13 place corresponding at central tube 9 outer wall is provided with screen pack 2.Screen pack 2 pairs of flushing fluids have filtration.
When the packer of the application is in oil pumping state, during sucker rod down stroke, oil well pump standing valve is closed, if oily overpressure is higher than oil jacket space pressure under pump, liquid supplements through well-flushing water hole 13 by oil pipe in sleeve pipe.During upstroke, oil well pump standing valve is opened, Produced Liquid enters central tube 9 by lower contact 10, enter the pump housing by valve 3, a part of liquid enters sleeve pipe by well-flushing water hole 13, and cover liquid in pipe changes thereupon, ensure that in sleeve pipe, liquid level stabilizing and oil well pump normally work, liquid level under the liquid level of oil jacket annular space and pump in oil pipe produces interlock, and the liquid level of oil jacket annular space changes along with the change of productive capacity of reservoir, makes to measure liquid level more accurate.
When the packer of the application is in oil pumping state, gum cover 6 seals oil jacket space, oil pipe inner chamber under valve 3 shutoff pump, well-flushing hot water enters oil pipe by well-flushing water hole 13 after well head enters oil sets annular space, return from valve 3, under gum cover 6 and valve 3 acting in conjunction, ensure that flushing fluid can not enter stratum, and directly discharge well, avoid formation contaminant.
When the packer of the application is in job state, close before underground construction operation and produce valve, suppressed in well by sleeve pipe, shear pin 11 is cut off when pressure is raised to 10-12 MPa, shear pin 11 is cut off rear sliding sleeve 4 and is moved down, discharge orifice 12 exposes in oil pipe and is interlinked to the outside, and shear pin 11 is cut off rear well head pressure and can be declined, and now can stop suppressing carrying out a series of construction operations such as emptying and preparing.When carrying along with on oil pipe after construction operation starts, the liquid in oil jacket ring cavity is released by discharge orifice 12 and enters in pit shaft, ensure that the liquid of oil jacket annular space can not overflow ground and cause ground environment to pollute.
Claims (3)
1. a washing well environment-friendly type double leather cup packer, comprise top connection (1) and lower contact (10), be threaded between top connection (1) and lower contact (10) central tube (9), it is characterized in that: described central tube (9) top internal fixtion has annular boss (15), the upper seat of annular boss (15) has valve (3), central tube (9) wall of annular boss (15) top has well-flushing water hole (13), central tube (9) wall of top, well-flushing water hole (13) is transversely fixed with pin of blocking (14), central tube (9) wall of annular boss (15) below has discharge orifice (12), central tube (9) middle part outer wall cover has sliding sleeve (4), sliding sleeve (4) upper end extends to central tube (9) outer wall corresponding to annular boss (15), sliding sleeve (4) below is provided with the shear pin ring (8) spacing to it, shear pin ring (8) is fixed on central tube (9) outer wall, sliding sleeve (4) outer wall cover has one group of gum cover (6), one group of gum cover (6) interval is arranged, gum cover (6) bottom is fixed on sliding sleeve (4) outer wall by locking nut (7).
2. washing well environment-friendly type double leather cup packer according to claim 1, is characterized in that: well-flushing water hole (13) place that described central tube (9) outer wall is corresponding is provided with screen pack (2).
3. washing well environment-friendly type double leather cup packer according to claim 2, is characterized in that: described shear pin ring (8) is fixed on central tube (9) outer wall by shear pin (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610004259.2A CN105464616A (en) | 2016-01-06 | 2016-01-06 | Well-washing environment-friendly double-cup packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610004259.2A CN105464616A (en) | 2016-01-06 | 2016-01-06 | Well-washing environment-friendly double-cup packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105464616A true CN105464616A (en) | 2016-04-06 |
Family
ID=55602723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610004259.2A Pending CN105464616A (en) | 2016-01-06 | 2016-01-06 | Well-washing environment-friendly double-cup packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105464616A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130845A (en) * | 2018-02-08 | 2019-08-16 | 中国石油天然气股份有限公司 | Oil well cleaning and conducting device |
| CN112177567A (en) * | 2020-12-01 | 2021-01-05 | 东营市汇诚石油工程技术有限责任公司 | Door-closable fracturing sliding sleeve and using method thereof |
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
| CN115653543A (en) * | 2022-10-27 | 2023-01-31 | 中国石油天然气集团有限公司 | Oil well sand washing and well washing conversion device, oil well sand washing and well washing system and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4921046A (en) * | 1988-12-13 | 1990-05-01 | Halliburton Company | Horizontal hole cleanup tool |
| CN2512905Y (en) * | 2001-11-29 | 2002-09-25 | 刘宪庆 | Leak-proof well flushing device for oil pumping well |
| CN2561922Y (en) * | 2002-07-19 | 2003-07-23 | 中国石化胜利油田有限公司采油工艺研究院 | Oil layer protector |
| CN200989185Y (en) * | 2006-10-17 | 2007-12-12 | 刘新东 | Expanding flushing packer |
| CN101705803A (en) * | 2009-11-18 | 2010-05-12 | 陈宁 | Well-flushing oil-drainage device of oil pumping pipe column |
| CN202596654U (en) * | 2012-05-04 | 2012-12-12 | 中国石油天然气股份有限公司 | Sliding sleeve type leakage-proof tool for pumping well |
| CN203347704U (en) * | 2013-06-18 | 2013-12-18 | 孙丽美 | Well washing and oil draining device for pumping well |
-
2016
- 2016-01-06 CN CN201610004259.2A patent/CN105464616A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4921046A (en) * | 1988-12-13 | 1990-05-01 | Halliburton Company | Horizontal hole cleanup tool |
| CN2512905Y (en) * | 2001-11-29 | 2002-09-25 | 刘宪庆 | Leak-proof well flushing device for oil pumping well |
| CN2561922Y (en) * | 2002-07-19 | 2003-07-23 | 中国石化胜利油田有限公司采油工艺研究院 | Oil layer protector |
| CN200989185Y (en) * | 2006-10-17 | 2007-12-12 | 刘新东 | Expanding flushing packer |
| CN101705803A (en) * | 2009-11-18 | 2010-05-12 | 陈宁 | Well-flushing oil-drainage device of oil pumping pipe column |
| CN202596654U (en) * | 2012-05-04 | 2012-12-12 | 中国石油天然气股份有限公司 | Sliding sleeve type leakage-proof tool for pumping well |
| CN203347704U (en) * | 2013-06-18 | 2013-12-18 | 孙丽美 | Well washing and oil draining device for pumping well |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130845A (en) * | 2018-02-08 | 2019-08-16 | 中国石油天然气股份有限公司 | Oil well cleaning and conducting device |
| CN110130845B (en) * | 2018-02-08 | 2024-03-26 | 中国石油天然气股份有限公司 | Oil well cleaning and conducting device |
| CN112177567A (en) * | 2020-12-01 | 2021-01-05 | 东营市汇诚石油工程技术有限责任公司 | Door-closable fracturing sliding sleeve and using method thereof |
| CN112177567B (en) * | 2020-12-01 | 2021-04-02 | 东营市汇诚石油工程技术有限责任公司 | Door-closable fracturing sliding sleeve and using method thereof |
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
| CN114837610B (en) * | 2021-02-02 | 2024-03-26 | 中国石油天然气股份有限公司 | Broken petroleum casing plugging device and method |
| CN115653543A (en) * | 2022-10-27 | 2023-01-31 | 中国石油天然气集团有限公司 | Oil well sand washing and well washing conversion device, oil well sand washing and well washing system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |